Process for manufacturing metallic manganese and calcium fluorid.



vam STATES PATENT OFFICE.

WALTER S. ROCKEY AND HILLIARY ELDRIDGE,- OF NEW YORK, N.

PROCESS FOR MANUFACTURING METALLIC MANGANESE AND CALCIUM FLUORID.

No Drawing.

To all whom it my concern:

'State of New York, have invented certain new and useful Im rovements'inthe Process for Manufacturing Metallic Manganese and Calcium 'Fluorid,of which the follow ing is a full, clear, and exact specification.

Our invention relates to the process of manufacturing metallic manganeseand calcium fluorid, and the object of our invention is to provide aprocess of manufacturing metallic manganese and calcium fluorid by thereduction of manganese fluorid with ca cium or the calcium of calciumcarbid.

We provide a suitable refractory crucible or tilting hearth composed ofmaterial neutral to the chemical action of the ingredients to betreated, which may be made of material such as magnesite. We then placein said crucible a mixture of manganese fluorid and calcium fluorid, thelatter acting as a flux, and fuse the same, and into this fused andliquid bath we place a proportionate amount of calcium carbid sufficientto re- The carbon of the calcium carbid which is also set free by thereaction, on account of its lesser gravity floats upward to the sur faceof the molten and liquid calcium fluorid and can be removed by skimmingand 'thus separated from the molten calcium fluorid. The moltenmanganese and calcium fluorid can then be poured out or drawn off fromthe receptacle, and thus separated, or they may be poured out togetherinto molds, the fluorid floating on the top of the manganese and servingas a flux. to prevent the oxidation of same; or the molten manganese andcalcium fluorid can be left to cool in the Specification of LettersPatent. Application filed September 17, 1910. Serial No. 582,480.

Patented Nov. 7, 1911.

crucible and then dropped out of the receptacle by upsetting the sameand then separating the ingot ofmanganese from the calcium fluoridmechanically.

We can use metallic calcium for the reduction instead of calcium carbidand in this event the calcium must be mixed with dry manganese fluoridwith or without dry calcium fluorid and placed in the crucible andcovered to exclude the air, and then heat to cause the reaction whichsissimilar to the la action already described when calcium carbid is usedwith the exception that no carbon has to be accounted for. One object ofusing calcium carbid is to reduce the violent action1 that results whenmetallic calcium is use We may place all of the ingredients to- Thecalciunr carbid does not enter into the chemical combination butseparates from the calcium and floats to the top of the ingredients.

Having thus described our invention what we claim as new is:

1. The process of manufacturing metallic manganese and calcium fluoridwhich consists in heating a mixture of manganese fluorid and metalliccalcium until chemical combination takes place and metallic manganeseand calcium fluorid are formed and separate from each other. i

2. The process of manufacturing metallic manganese and calcium fluoridwhich consists in heating a mixture of manganese fluorid, calciumfluorid and metallic calcium, until'chemical combination takes place andmetallic manganese and calcium fluorid are formed and separate from eachother.

3. The process of manufacturing metallic manganese and calcium fluoridwhich consists in heating a mixture of man anese fluorid, calciumfluorid and metallic calcium, until chemical combination takes place andmetallic manganese and calcium fluorid are formed and separate from eachother, and then cooling said manganese beneath said fluorids.

4. The process of manufacturing metallic manganese and calcium fluoridwhich con.- sists in heating a mixture of manganese fluorid and metalliccalcium until chemical combination takes place and metallic man- .ganeseand calcium fluorid are formed and reducing agent until chemicalcombination takes lace and metallic manganese and calcium fluorid areformed and separate from each other.-

6. The process of manufacturing metallic manganese and calcium fiuoridwhich consists in heatin together manganese fluo'rid,

' calcium fluori and a substance containing calcium, the calcium ofwhich serves as a reducing agent untll chemlcal reaction takes lace andmetallic manganese and calcium uorid are formed and separate from eachother, arid then cooling the manganese beneath the surface of saidfiuorids.

7. The process of manufacturin metallic manganese and calcium fluorid wich consists in heating a mixture of man anese fluorid and. a substancecontaining ca cium, the calcium of which serves as a reducing agentuntil chemical combination takes place and metallic manganese andcalcium fluorid are formed and separate from each other. e

In testimony whereof, we afiix our signatures, in presence of twowitnesses.

. WALTER S. ROCKEY.

HILLIARY vELDRIDGE.

Witnesses:

CHAS. R. BALDWIN, G. F. QUACKENBUBH.

